Lions head coach Dan Campbell said Monday that Montgomery (rib) is trending toward a return to action Sunday against the Chargers. Montgomery missed the team's previous two games with a rib cartilage injury, but the time off appears to have allowed him to heal. In the three games this season in which both Montgomery and first-round pick Gibbs have been available, Montgomery has paced the Detroit backfield, averaging 24 touches in those contests. However, with Gibbs coming off a landmark performance in Week 8, he could end up poaching more work from Montgomery.